题解 | #计算三角形的周长和面积#

#define _CRT_SECURE_NO_WARNINGS 1

#include<stdio.h>

#include<math.h>

int main()

{

int a, b, c;

scanf("%d%d%d", &a, &b, &c);

float circumference = 0;

float area = 0;

circumference = a + b + c;

area = 0.25 * sqrt((a + b + c) * (a + b - c) * (a - b + c)*(b + c - a));

printf("circumference=%.2f area=%.2f", circumference, area);

return 0;

}